10664240 has 20 divisors (see below), whose sum is σ = 24794544. Its totient is φ = 4265664.

The previous prime is 10664221. The next prime is 10664243. The reversal of 10664240 is 4246601.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×10664240² = 227452029555200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10664243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66572 + ... + 66731.

Almost surely, 2^10664240 is an apocalyptic number.

10664240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10664240 is an abundant number, since it is smaller than the sum of its proper divisors (14130304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10664240 is a wasteful number, since it uses less digits than its factorization.

10664240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133316 (or 133310 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 10664240 is about 3265.6147966348. The cubic root of 10664240 is about 220.1117889169. Note that the first 3 decimals are identical.

It can be divided in two parts, 106 and 64240, that added together give a palindrome (64346).

The spelling of 10664240 in words is "ten million, six hundred sixty-four thousand, two hundred forty".